ATI 4850 PSU requirements?

[the_worrier]

Err!, as per title, really!

 

[the_worrier]

bump

 

[Jakus]

I did some measurements Yesterday..
Intel Quad @3.2 ghz 2 sticks memory 1 sata drive 1 optical drive and floppy with 1 Hd4850 windows xp
Desktop 100watts Full 3D 180watts
2 X hd4850 in crossfire
Desktop 146watts full 3D 260watts.....with very occasional 302Watt transients

A quality 400w psu or 600w for crossfire will have power in hand

 

[the_worrier]

I did some measurements Yesterday..
Intel Quad @3.2 ghz 2 sticks memory 1 sata drive 1 optical drive and floppy with 1 Hd4850 windows xp
Desktop 100watts Full 3D 180watts
2 X hd4850 in crossfire
Desktop 146watts full 3D 260watts.....with very occasional 302Watt transients

A quality 400w psu or 600w for crossfire will have power in hand

Thanks a lot, mate. 'preciate that.

 

[Pulse]

Similarly

E8400 @ 3.5GHz
2 x 2GB Geil
MSI P35 Neo2 -FR
HD 4850 (overclocked 690/1150)
2 x 250GB Spinpoints
1 x 500GB Spinpoint
few other cards.

All runs fine on my Seasonic S12

 

[EdGey]

I did some measurements Yesterday..
Intel Quad @3.2 ghz 2 sticks memory 1 sata drive 1 optical drive and floppy with 1 Hd4850 windows xp
Desktop 100watts Full 3D 180watts
2 X hd4850 in crossfire
Desktop 146watts full 3D 260watts.....with very occasional 302Watt transients

A quality 400w psu or 600w for crossfire will have power in hand

what about a quality 520 for crossfire?

 

[Slashiem]

I think they reccommended on there spec's for single 4850 as 450W+ and crossfire was 600W+ i remember correctly.
But with a decent PSU you could skimp a little.

~Slash

 

[Jakus]

what about a quality 520 for crossfire?

Something like an Enermax 485W would run crossfire, But You need a good 12v rail, not all supply's are created equal hence the higher reccomended requirements

 

[Stu]

To quote myself....

There is an ATI presentation floating around that states:

-ATI Radeon HD 4850 system requirements
450 Watt or greater power supply with 75 Watt 6-pin PCI Express power connector recommended (550 Watt and two 6-pin connectors for ATI CrossFreX technology in dual mode)

-ATI Radeon HD 4870 system requirements
500 Watt or greater power supply with two 75 Watt 6-pin PCI Express power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFreX technology in dual mode)